Oleg Semyonovich Mandrygin is a doctor with a nasty temperament who works alone. Dima is an ordinary young courier, unburdened by the hardships of life. Their fates intertwine when Dima crashes his scooter into Oleg Semyonovich. Now, to keep Mandrygin from losing his job and neglecting his patients, Dima will have to pretend to be a real doctor and take his place.
